If you own a Santevia Gravity Water System, you already know how good that mineralized, alkaline water tastes. But to keep it flowing clean, you gotta change the filter. This is the official Alkaline & Fluoride Replacement Filter. It does a bunch of good stuff in one go: it reduces contaminants like chlorine, fluoride, and even traces of heavy metals. Then, it adds beneficial minerals like calcium, magnesium, and potassium back into your water. Finally, it raises the pH, making your water more alkaline. One filter is supposed to last about 4 months for an average household. Replacing it is pretty easy – just swap out the old one in the top chamber of your Santevia dispenser. It's a six-stage filter, so it's doing a thorough job. They also have a cool mission – for every pitcher they sell, they donate to provide clean water in communities that need it. So you're hydrating yourself and helping others. Just remember to keep track of when you installed it so you change it on time for the best tasting water.